maintenance/reassignEdits.php

   1 <?php
   2 /**
   3  * Reassign edits from a user or IP address to another user
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Maintenance
  22  * @author Rob Church <robchur@gmail.com>
  23  * @licence GNU General Public Licence 2.0 or later
  24  */
  25
  26 require_once __DIR__ . '/Maintenance.php';
  27
  28 /**
  29  * Maintenance script that reassigns edits from a user or IP address
  30  * to another user.
  31  *
  32  * @ingroup Maintenance
  33  */
  34 class ReassignEdits extends Maintenance {
  35         public function __construct() {
  36                 parent::__construct();
  37                 $this->addDescription( 'Reassign edits from one user to another' );
  38                 $this->addOption( "force", "Reassign even if the target user doesn't exist" );
  39                 $this->addOption( "norc", "Don't update the recent changes table" );
  40                 $this->addOption( "report", "Print out details of what would be changed, but don't update it" );
  41                 $this->addArg( 'from', 'Old user to take edits from' );
  42                 $this->addArg( 'to', 'New user to give edits to' );
  43         }
  44
  45         public function execute() {
  46                 if ( $this->hasArg( 0 ) && $this->hasArg( 1 ) ) {
  47                         # Set up the users involved
  48                         $from = $this->initialiseUser( $this->getArg( 0 ) );
  49                         $to = $this->initialiseUser( $this->getArg( 1 ) );
  50
  51                         # If the target doesn't exist, and --force is not set, stop here
  52                         if ( $to->getId() || $this->hasOption( 'force' ) ) {
  53                                 # Reassign the edits
  54                                 $report = $this->hasOption( 'report' );
  55                                 $this->doReassignEdits( $from, $to, !$this->hasOption( 'norc' ), $report );
  56                                 # If reporting, and there were items, advise the user to run without --report
  57                                 if ( $report ) {
  58                                         $this->output( "Run the script again without --report to update.\n" );
  59                                 }
  60                         } else {
  61                                 $ton = $to->getName();
  62                                 $this->error( "User '{$ton}' not found." );
  63                         }
  64                 }
  65         }
  66
  67         /**
  68          * Reassign edits from one user to another
  69          *
  70          * @param User $from User to take edits from
  71          * @param User $to User to assign edits to
  72          * @param bool $rc Update the recent changes table
  73          * @param bool $report Don't change things; just echo numbers
  74          * @return int Number of entries changed, or that would be changed
  75          */
  76         private function doReassignEdits( &$from, &$to, $rc = false, $report = false ) {
  77                 $dbw = $this->getDB( DB_MASTER );
  78                 $this->beginTransaction( $dbw, __METHOD__ );
  79
  80                 # Count things
  81                 $this->output( "Checking current edits..." );
  82                 $res = $dbw->select(
  83                         'revision',
  84                         'COUNT(*) AS count',
  85                         $this->userConditions( $from, 'rev_user', 'rev_user_text' ),
  86                         __METHOD__
  87                 );
  88                 $row = $dbw->fetchObject( $res );
  89                 $cur = $row->count;
  90                 $this->output( "found {$cur}.\n" );
  91
  92                 $this->output( "Checking deleted edits..." );
  93                 $res = $dbw->select(
  94                         'archive',
  95                         'COUNT(*) AS count',
  96                         $this->userConditions( $from, 'ar_user', 'ar_user_text' ),
  97                         __METHOD__
  98                 );
  99                 $row = $dbw->fetchObject( $res );
 100                 $del = $row->count;
 101                 $this->output( "found {$del}.\n" );
 102
 103                 # Don't count recent changes if we're not supposed to
 104                 if ( $rc ) {
 105                         $this->output( "Checking recent changes..." );
 106                         $res = $dbw->select(
 107                                 'recentchanges',
 108                                 'COUNT(*) AS count',
 109                                 $this->userConditions( $from, 'rc_user', 'rc_user_text' ),
 110                                 __METHOD__
 111                         );
 112                         $row = $dbw->fetchObject( $res );
 113                         $rec = $row->count;
 114                         $this->output( "found {$rec}.\n" );
 115                 } else {
 116                         $rec = 0;
 117                 }
 118
 119                 $total = $cur + $del + $rec;
 120                 $this->output( "\nTotal entries to change: {$total}\n" );
 121
 122                 if ( !$report ) {
 123                         if ( $total ) {
 124                                 # Reassign edits
 125                                 $this->output( "\nReassigning current edits..." );
 126                                 $dbw->update( 'revision', $this->userSpecification( $to, 'rev_user', 'rev_user_text' ),
 127                                         $this->userConditions( $from, 'rev_user', 'rev_user_text' ), __METHOD__ );
 128                                 $this->output( "done.\nReassigning deleted edits..." );
 129                                 $dbw->update( 'archive', $this->userSpecification( $to, 'ar_user', 'ar_user_text' ),
 130                                         $this->userConditions( $from, 'ar_user', 'ar_user_text' ), __METHOD__ );
 131                                 $this->output( "done.\n" );
 132                                 # Update recent changes if required
 133                                 if ( $rc ) {
 134                                         $this->output( "Updating recent changes..." );
 135                                         $dbw->update( 'recentchanges', $this->userSpecification( $to, 'rc_user', 'rc_user_text' ),
 136                                                 $this->userConditions( $from, 'rc_user', 'rc_user_text' ), __METHOD__ );
 137                                         $this->output( "done.\n" );
 138                                 }
 139                         }
 140                 }
 141
 142                 $this->commitTransaction( $dbw, __METHOD__ );
 143
 144                 return (int)$total;
 145         }
 146
 147         /**
 148          * Return the most efficient set of user conditions
 149          * i.e. a user => id mapping, or a user_text => text mapping
 150          *
 151          * @param User $user User for the condition
 152          * @param string $idfield Field name containing the identifier
 153          * @param string $utfield Field name containing the user text
 154          * @return array
 155          */
 156         private function userConditions( &$user, $idfield, $utfield ) {
 157                 return $user->getId()
 158                         ? [ $idfield => $user->getId() ]
 159                         : [ $utfield => $user->getName() ];
 160         }
 161
 162         /**
 163          * Return user specifications
 164          * i.e. user => id, user_text => text
 165          *
 166          * @param User $user User for the spec
 167          * @param string $idfield Field name containing the identifier
 168          * @param string $utfield Field name containing the user text
 169          * @return array
 170          */
 171         private function userSpecification( &$user, $idfield, $utfield ) {
 172                 return [ $idfield => $user->getId(), $utfield => $user->getName() ];
 173         }
 174
 175         /**
 176          * Initialise the user object
 177          *
 178          * @param string $username Username or IP address
 179          * @return User
 180          */
 181         private function initialiseUser( $username ) {
 182                 if ( User::isIP( $username ) ) {
 183                         $user = new User();
 184                         $user->setId( 0 );
 185                         $user->setName( $username );
 186                 } else {
 187                         $user = User::newFromName( $username );
 188                         if ( !$user ) {
 189                                 $this->error( "Invalid username", true );
 190                         }
 191                 }
 192                 $user->load();
 193
 194                 return $user;
 195         }
 196 }
 197
 198 $maintClass = "ReassignEdits";
 199 require_once RUN_MAINTENANCE_IF_MAIN;